feat(ImagePreview): add closed event

src/image-preview/ImagePreview.js

@@ -361,6 +361,10 @@ export default createComponent({
         );
       }
     },
+
+    onClosed() {
+      this.$emit('closed');
+    },
   },
 
   render() {
@@ -369,7 +373,7 @@ export default createComponent({
     }
 
     return (
-      <transition name="van-fade">
+      <transition name="van-fade" onAfterLeave={this.onClosed}>
         <div vShow={this.value} class={[bem(), this.className]}>
           {this.genClose()}
           {this.genImages()}

src/image-preview/README.md

@@ -144,6 +144,7 @@ export default {
 | Event | Description | Parameters |
 |------|------|------|
 | close | Triggered when close | { index, url } |
+| closed `v2.5.6` | Triggered after closed | - |
 | change | Triggered when current image change | index: index of current image |
 | scale `v2.5.0` | Triggered when current image scale | { index: index of current image, scale: scale of current image} |
 

src/image-preview/README.zh-CN.md

@@ -160,6 +160,7 @@ export default {
 | 事件 | 说明 | 回调参数 |
 |------|------|------|
 | close | 关闭时触发 | { index: 索引, url: 图片链接 } |
+| closed `v2.5.6` | 关闭且且动画结束后触发 | - |
 | change | 切换当前图片时触发 | index: 当前图片的索引 |
 | scale `v2.5.0` | 缩放当前图片时触发 | { index: 当前图片的索引, scale: 当前缩放的值 } |